/*
 * File    : DownloadListener.java
 * Created : 11-Jan-2004
 * By      : parg
 * 
 * Azureus - a Java Bittorrent client
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.gudy.azureus2.plugins.download;

/**
 * A listener informed of changes to a Download's state and position
 * 
 * @author parg
 * @author TuxPaper (positionChanged)
 */

public interface DownloadListener {
    /**
     * The Download's state has changed. This is also triggered if the user toggles the Force Start on/off.
     */
    public void stateChanged(Download download, int old_state, int new_state);

    /**
     * Position of download has changed.
     * 
     * @param download
     *            object in which the position has changed
     * @param oldPosition
     *            position that the download used to be at
     * @param newPosition
     *            position that the download is now at
     */
    public void positionChanged(Download download, int oldPosition, int newPosition);
}
